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Virtual Null Modem - Two virtual serial ports connected with each other via virtual null modem cable | AGG Software
GitHub - diegopego/com0com-1: Null-modem emulator - The virtual serial port driver for Windows. Brought to you by: vfrolov [Vyacheslav Frolov](http://sourceforge.net/u/vfrolov/profile/)
![serial port - C# serialPort: Application hangs if there is no recipient on Write() (virtual null modem) - Stack Overflow serial port - C# serialPort: Application hangs if there is no recipient on Write() (virtual null modem) - Stack Overflow](https://i.stack.imgur.com/IyeJD.png)
serial port - C# serialPort: Application hangs if there is no recipient on Write() (virtual null modem) - Stack Overflow
![Eltima Software releases completely revamped Virtual Serial Port Driver 10 - Open Electronics - Open Electronics Eltima Software releases completely revamped Virtual Serial Port Driver 10 - Open Electronics - Open Electronics](https://www.open-electronics.org/wp-content/uploads/2021/03/image.jpg)